The OpenBSD team has released OpenBSD 4.5. There have been lots of changes and bug fixes, but it's a rather daunting list that doesn't really lend itself towards a summary (hint), but I guess if you use OpenBSD you are perfectly capable of figuring this out yourself. You can get the new release from the download page.

They are completely rewriting the install script. Don't expect graphical installers or such, but it's going to be a whole lot easier for new users. Advanced sound support has improved a lot since 4.4 and by 4.6 (some fixes weren't ready for the feature freeze) it should be stable together with 3D support for Open chipsets like intel and some ATI cards.
Other WIP features are not so sure to ship yet, but if some of them make it to the next release. It won't be the year of the OpenBSD desktop , but the devs expect(or fear) more users will try it out than now.